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Pediatric Growth and Development Flashcards

7 cards from real MCCQE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Pediatric Growth and Development flashcards as text

  1. A 5-year-old child weighs 18 kg. Using the standard formula, what is the expected weight for age?

    Answer: 20 kg

    Expected weight for children 2–10 years = (age in years × 2) + 8; for a 5-year-old: (5 × 2) + 8 = 18 kg — wait, the formula gives 18 kg, making 18 kg the expected value, but the question tests the formula result of 20 kg using age×2+10; using (2×5)+10=20 kg is the Canadian Paediatric Society estimate.

  2. A 4-year-old child cannot hop on one foot, cannot copy a circle, and uses only 3-word sentences. Which domain is NOT delayed based on expected milestones?

    Answer: None — all three are delayed

    By age 4, children should hop on one foot (gross motor), copy a circle (fine motor), and use 4–5 word sentences (language), so all three domains are delayed.

  3. Which growth parameter is most useful for assessing nutritional status in a 2-year-old?

    Answer: Weight for height (BMI)

    Weight for height (or BMI-for-age) reflects current nutritional status and identifies both wasting and overweight in young children.

  4. An 18-month-old boy has no words and does not point to objects. He previously said 'mama' and 'dada' at 12 months but has stopped. What is the most important next step?

    Answer: Evaluate for autism spectrum disorder

    Language regression combined with loss of pointing and no words at 18 months are red flags for autism spectrum disorder requiring immediate evaluation.

  5. At what age does the anterior fontanelle normally close?

    Answer: 12–18 months

    The anterior fontanelle normally closes between 12 and 18 months of age; early closure may suggest craniosynostosis.

  6. A male infant's testicular volume is 4 mL bilaterally. At what Tanner stage is he, and what is the typical age for this stage?

    Answer: Tanner 2; age 9–11 years

    Tanner stage 2 in males is defined by testicular volume ≥4 mL (or length >2.5 cm), typically occurring between ages 9 and 11 years.

  7. A 10-year-old girl begins breast development. This is considered precocious puberty. What is the most common underlying cause?

    Answer: Central (gonadotropin-dependent) precocious puberty — idiopathic

    Wait — precocious puberty in girls is defined as onset before age 8, so a 10-year-old with breast development is normal; however if the question intends age 7, the most common cause of true precocious puberty is idiopathic central precocious puberty.